Can't Get New Intel Denoiser to Work on Projects
You have to plug the "image" output of the denoiser into the "image" input of the compositor.

Remove the link from "image" output of "Render layers" entirely.

Loaded it up, and it works flawlessly.
FYI: The intel denoiser doesn't kick in until after the image is fully rendered, and takes 3-5 seconds to clear it up.